G-BOOK SYSTEM (w/ Telematics Transceiver) "NRES" is Displayed in "DCM" on the System Check Mode Screen

DESCRIPTION

If the telematics transceiver does not receive any of the following from the multi-media module receiver assembly within the specified time, "NRES" will be displayed.


WIRING DIAGRAM

A01FJ2DE01

INSPECTION PROCEDURE

Note

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Tech Tips

When replacing the multi-media module receiver assembly or the telematics transceiver, perform the vehicle contract setting Click here.

PROCEDURE


  1. INSPECTION USING "SYSTEM CHECK MODE" SCREEN


    1. Perform inspections indicated on the System Check Mode screen to confirm the DCM inspection result Click here.

      Result
      Result Proceed to
      "OK" is displayed in "DCM" on the System Check Mode screen. A
      "NRES" is displayed in "DCM" on the System Check Mode screen. B

    B

    Click here

    A

    USE SIMULATION METHOD TO CHECK Click here

  2. CHECK HARNESS AND CONNECTOR (TELEMATICS TRANSCEIVER - BATTERY AND BODY GROUND)


    1. A01FGQPE03
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Telematics Transceiver)

      Disconnect the telematics transceiver connector.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      N86-10 (E) - Body ground Always Below 1 Ω

    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      N86-1 (+B) - Body ground Always 11 to 14 V
      N86-14 (IG2) - Body ground Engine switch on (IG) 11 to 14 V
      N86-13 (ACC) - Body ground Engine switch on (ACC) 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK MULTI-MEDIA MODULE RECEIVER ASSEMBLY (USBV, USBG)


    1. A01FGHWE06
      Text in Illustration
      *a

      Component without harness connected

      (Multi-media Module Receiver Assembly)

      Disconnect the multi-media module receiver assembly connector.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      N145-2 (USBG) - Body ground Always Below 1 Ω

    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      N145-4 (USBV) - N145-2 (USBG) Engine switch on (ACC) 4.75 to 5.25 V

    NG

    REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (MULTI-MEDIA MODULE RECEIVER ASSEMBLY - TELEMATICS TRANSCEIVER)


    1. Check the installation condition.


      1. Check the USB communication cable (digital communication cable) between the multi-media module receiver assembly and the telematics transceiver for any installation or connection problems.

    2. Disconnect the N145 multi-media module receiver assembly connector.

    3. Disconnect the N146 telematics transceiver connector.

    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      N145-1-2 (USB+) - N146-1-2 (USB+) Always Below 1 Ω
      N145-1-1 (USB-) - N146-1-1 (USB-) Always Below 1 Ω
      N145-1-3 (USBS) - N146-1-3 (USBS) Always Below 1 Ω
      N145-2 (USBG) - N146-2 (USBG) Always Below 1 Ω
      N145-4 (USBV) - N146-4 (USBV) Always Below 1 Ω
      N145-1-2 (USB+) - Body ground Always 10 kΩ or higher
      N145-1-1 (USB-) - Body ground Always 10 kΩ or higher
      N145-1-3 (USBS) - Body ground Always 10 kΩ or higher
      N145-2 (USBG) - Body ground Always 10 kΩ or higher
      N145-4 (USBV) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. REPLACE TELEMATICS TRANSCEIVER


    1. Replace the telematics transceiver with a known good one and check if the same problem occurs again Click here.


      1. Perform inspections indicated on the System Check Mode screen to confirm the DCM inspection result Click here.

        Result
        Result Proceed to
        "OK" is displayed in "DCM" on the System Check Mode screen. A
        "NRES" is displayed in "DCM" on the System Check Mode screen. B

    B

    REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here

    A

    END (TELEMATICS TRANSCEIVER IS DEFECTIVE)